Tool for removing jar caps



Sem 3 1%.. F. M. HARGREAVES TOOL FOR REMOVING JAR CAPS Filed July 2, 1934 Patented Sept. 3, 1935 UNITED STTES TOOL FOR REMOVING .UAR CAPS Frederick M. Hargreaves, St. Louis, Mo. Application .luly 2, 1934, Serial No. 733,39*?

1 Claim.

My invention has relationto improvements in tools for removing jar caps, and it consists in the novel features of construction more fully set forth in the specification and pointed out in the claim.

My cap remover is primarily adapted for the removal of screw caps from containers such as Mason jars, and is adapted to operate with equal facility on caps of any size within the range of the tool.

The present invention is a continuation in part of the subject-matter of that application on can openers, filed February 21,

object to securely hold the means cable is provided to for the cap and said cable is by means of a suitable This object, as well as other advantages will be better apparent jar cap., for which purpose a serve as a grip clamped to the handle lever.

inherent in the invention,

of my co-pending Serial No. 712,266, 1934, and has for its principal that grip the from a detailed description of the same in connection with the accompanying drawing, in which:

Figure 1 is a top plan of a jar showing my improved tool applied to a closure cap and in the position prior to exerting pressure on the tool for unscrewing the cap; similar to Fig. l showing it assumes when Fig. the tool in a position pressure is applied for the pur- 2 is a top plan pose of unscrewing the cap; Fig. 3 is a side elevation of a jar and closure cap (on a reduced scale) of my improved cap remover applied to the cap for the purpose of unscrewing the same; and Fig. 4 is a cross-sectional detail taken on the line of Fig. 1.

Referring to the drawing, J conventional type of jar mouth m` to receive a closure cap that when such a matter of common knowledge represents the having a threaded C. Itis a jar has been tightly closed for some time for the preservation of often extremely its contents the closure cap C is difiicult to remove on account of corrosion or adhesion caused by the contents of the jar. prises a handle posed opening or formed on one end an outwardly presented of said handle.

My improved cap remover R com- I having a longitudinally disslot 2 formed in it and a jaw 3 The jaw 3 has serrated surface and a lug 5 projecting forwardly at an angle to said surface 4. There is also a extending through the jaw opposite to the the surface 4.

secured at one end bifurcated rivet 8, the

being passed through the passageway which the cable slides freely for slot or passageway t 3 from the end thereof' lug 5 rearwardly at an angle to A cable i (preferably a wire) is to the lug 5 by means of a other end of the cable 6 through the purpose of adjusting the tool to different sizes of jar caps.

A channel-shaped lever 9 terminates in inwardly extending ears i6 it by means of which the lever is pivotally secured to the handle I near the jaw 3 by means of a rivet i i. An opening i2 is formed in the bottom of the lever 9 near the free end thereof and the cable 'l is nested between the channels i3, i3 of the lever and threade d through the opening i2, as shown (Figs. 1 and 2).

The purpose of the lever 9 is to provide means for securely gripping the cable 'E when the tool is applied to the cap for the purpose of removing the same.

ln order to augment the gripping effect of the lever 9 a boss lil is provided on the lower edge of the handle i adjacent to the jaw 3,

is adjusted to the cap C in it, the surplus cable being channel of t so that there is no slack drawn through the the lever 9 as just explained. The

lever is then closed against the handle l and firmly gripp ed by the operator and firmly held against said handle by the operator who tilts the same, as shown in Fig. 2. lug 5 to move outwardly away thus impose This causes the from the jar and tension on the cable l. The pressure thus exerted on the cap C causes the surface to bite into the cap and the cable to firmly grip the cap, tilting movement of whereupon a continuation of the the handle l serves to loosen the cap from the threaded mouth end of the jar J so that the c ap may be unscrewed therefrom.

The leverage provided by the handle I and the projecting lug 5 causes the cable to hug the cap very tightly so that it will not slip on the cap as the movement is continued but instead allows ie leverage the purpose Having de to be communicated to the cap for of loosening the same. scribed my invention, I claim:

A cap remover comprising a handle having a jaw at one said jaw, a

end, a lug projecting laterally from cable secured to said lug, said jaw having a suitable socket for receiving the free end of the c able, and a lever pivotally connected to the handle near the jaw, said lever being provided with a suitable recessed portion for receiving said cable, and arranged to be moved into nesting relation with the handle to effectively grip the cable between the lever and the handle.

FREDERICK M. HARGREAVES. 

